Web-roll support



R. C. HAWK.

WEB ROLL SUPPORT.

APPLICATION FILED AUG.25.I9I7.

Patented July 15, 1919.

2 SHEETS-SHEET I INVENTOR.

R. C. HAWK.

WEB ROLL SUPPORT.

APPLICATION FILED AUG.25. 1911.

1 309,621 Patented July 15, 1919.

2 SHEETS-SHEET 2.

'mvEN'roR.

hm COLUMBIA PLANOORAPH c0.. WASHINGTON. n. c.

UNITED STATES PATENT OFFICE.

ROSCOE C. HAWK, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO R. HOE AND ('10., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

WEB-ROLL SUPPORT.

Specification of Letters Patent.

Patented July 1 5, 1919.

Application filed August 25, 1917. Serial No. 188,254.

To all whom it may concern:

Be it known that I, Roscoe C. HAWK, a citizen of the United States, residing at Pittsburgh, county of Allegheny, and State of Pennsylvania, have invented certain new and useful Improvements in WVeb-Roll Supports, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to certain improvements in web roll supports for supporting the roll of paper which forms the source of web supply in web printing machines, and

the invention has for its especial object the provision of an improved construction whereby the web roll may be rotatably secured to its spindle or shaft in a more simple manner and without the usual screws or bolts or other small parts heretofore used, and which required setting up and assembling by the pressman when the roll is to be used.

An efficient construction for effecting the chief object of the invention will now be described in accordance with the accompany-- ing drawings, in which Figure 1 is a side elevation, partly broken away and partly in section, of a web roll and core, the roll shaft and the shaft supporting bearings;

Fig. 2 is a longitudinal section, partly broken away, on an enlarged scale, showing one end of the roll and the improved devices for locking the roll to its shaft;

Fig. 3 is a view similar to Fig. 2, showing the locking devices in another position with the roll locked to its spindle or shaft;

Figs. 4 and 5 are cross sectional views taken, respectively, on the lines t--'l: and 5-6 of Figs. 2 and 3, and,

Fig. 6 is an end view of the locking construction, the spindle or shaft bearing being omitted.

Referring now to these drawings, the web roll is indicated by the numeral 1 and this roll is, as usual during manufacture, wound on a hollow core 2, usually of metal or other equally suitable material. This roll is supported when in use on a shaft 3 which extends through the hollow core and is supported in slotted bearings 4 suitably mounted on frame 5 in the machine, these bearings being provided so that the shaft may be readily positioned in and removed from the bearings.

In constructions embodyinothe invention, locking devices are providec whereby the roll may be locked to its shaft so as to rotate therewith without requiring any settting up of screws or other small parts by the pressman, and in constructions embodying the invention in its best form, these locking devices will be such that the greater the pull of the web in unwinding the web from the roll, the more securely will the .roll be locked to its shaft. A simple and cflicient construction has been provided by the present invention, which construction includes an annular eccentric locking mechanism, by the rotation of which the roll score is firmly locked to its shaft, the eccentric being so formed that any increase of tension on the web in unwinding it from the roll will tend to increase the movement of the eccentric and cause the roll core to be more firmly secured to its shaft. Various specific constructions for effecting this may, of course, be devised. A very convenient one, however, is that illustrated in which there is provided an annular head or bushing 6 through which the roll shaft extends. This head or bushing 6 extends a sufficient distance into the core to provide a secure bearing surface about the shaft and is, as shown, slightly eccentric thereto, so as to have a slight movement around the shaft. The bushing is preferably provided with a beveled shoulder, as at 7, taking against a cooperating bevel 8 on the end of the core, thus forming a nice fit and also a stop to prevent the bushing moving too far into the core. The bushing 6 is secured to the core so as to rotate therewith in any suitable manner, as by a key 9 seated in key grooves 10, 11 formed, respectively,

in the bushing and core, the key being held in position in any suitable manner, as by set screws 12. The outer end of the bushing is recessed or socketed, as indicated at, 13 to receive the end 14 of an annular hollow eccentric locking plug or head 15, this plug or head encircling the shaft 3 and being eccentric thereto. The plug is secured in the head or bushing so as to rotate independently of it by means of a set screw 16 taking into a slot 17 in the end 14 of the eccentric, thus preventing sidewise movement of the parts relatively to each other.

to each other, and in the construction shown the head is eccentric to the plug. Recesses This locking plug and the recess 13 in th head 6 are eccentric move the parts and to permit the position-- ing of a new roll on the roll spindle.

It will be apparent from the construction shown and described that the pull of the web, as the web is unwound from the roll, will rotate the head 6 and lock it to the end 14 of the plug 15, and it in turn will be rotated and locked to the shaft 3 and the roll will be firmly locked to the shaft, and as the tension on the roll is increased so will the locking action of the eccentrics be increased. When it is desired to remove the roll, the eccentric plug is rotated in the reverse direction by means of a suitable tool inserted in recesses provided therein, which reverse rotation breaks the eccentric lock and causes the parts to assume a position in which they may be readily removed from the core and spindle. It will be seen, furthermore, that a very simple and convenient lock has been provided by the present construction, which requires no setting up by the pressman, and in which the increased tension of the web causes an increased locking action between the web roll core and its support and spindle.

-It will be understood that while the invention has been shown as embodied in a very convenient construction, the invention is not to be limited to the precise details of construction shown and described, but that other constructions may be employed for effecting an automatic eccentric lock between a web roll and its supporting spindle and the invention is not limited to the specific lock shown and described.

What is claimed is:

1. In a web roll support, the combination of a hollow roll supporting core, a roll shaft on which the core is supported, and a two-part clamp for locking the roll to'the shaft including an annular member surrounding the shaft and free therefrom extending into the core and secured thereto, and an annular locking device cooperating with the annular member eccentric to and free of the shaft and moved into locking relation with the shaft by the rotation of the annular member. r V

2. In a web roll support, the combination of a hollow roll supporting core, a roll shaft on which the core is supported and a twopart clamp for locking the roll to the shaft including an annular member surrounding the shaft and having a limited rotary movement relatively thereto, said member extendmy hand.

ing into the core and secured thereto, and an annular locking device cooperating with the annular member eccentric to and free of the shaft and moved into locking relation with the shaft by the rotation of the annular member.

3. In a web roll support, the combination of'a hollow roll supporting core, a roll shaft on which the core is supported, a two-part clamp for locking the roll to the shaft including an annular member surrounding the shaft and having a limited movement with respect thereto, said member extending into the core and secured thereto, and an annular locking head extending into said annular member and surrounding the shaft, said an nular locking head being eccentric to the haft and to the annular member and moved into locking relation with the shaft by the rotation of the annular member.

4. In a web roll support, the combination of a core having hollow ends on which the roll is supported, a shaft supporting the core, a head extending into the core and secured thereto and having a limited movement around the shaft, a locking plug eccentric to the shaft entering the head, and

moved into locking relation with the shaft by the movement of the head and means for preventing sidewise movement of the plug.

5. In a web roll support, the combination of a web roll and a core having hollow ends on which the roll is wound, a roll shaft, a head extending into the core and secured to rotate therewith, an eccentric recess in the head, and a locking plug extending into the recess and eccentric to the shaft.

6. In a web roll support, the combination of a web roll and a core having hollow ends on which the roll is wound, a roll shaft, a head extending into the core and secured to rotate therewith, an eccentric-recess in the head, a locking plug extending into the recess and eccentric to the shaft, and a recess in the plug beyond the head adapted for the insertion of a tool to rotate the plug and break the lock.

7. The combination of a web roll and a core having hollow ends on which the roll is wound, a roll shaft, a head extending into the core secured to rotate therewith surrounding the shaft and eccentric thereto, an

eccentric recess in the head, and a locking plug extending into the recess and eccentric to the shaft. V

In testimony whereof, I have hereunto set ROSCOE'G, I 7 Witness: 7

' ALIoE A. TRILL;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

